1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfd096f09d190f8fa8a72bbd81a53e4afafa41fdc27f96a2bd7af6481aacad5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/384cd47f-a46b-468c-af62-869919c61291.json and https://artists.proofprofile.net/proofs/artist/384cd47f-a46b-468c-af62-869919c61291.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d5a82915542e656926a501e421feeab7009639536e524b09eea31290158deb. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2438358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fa68e1a02cd50f99d7e88d3d4b5870f6c5463796ddc33d8c5f0493847440c1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2438360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4563f40ec4694a9492c188158a192a5029b064030f5e2d3e135a0a59519aa5. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2438361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537b25763f5b2ab562dfe329775f8cb02e835854411ab326424f8ef003122884. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2438362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eada86145ae08d76b1edb60d8488313e1f84eb3e9fa860eeac607353fa59b47. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2438366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9e6c4dbba5fcc7b2ed947965226fd7ca64690b4485c2e55aef3cc7206a7904. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2438368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d24d841168e9f2efcf4ffca2c393a1ca6edbebe6e5e9f645f8ef92cd2c2c89f. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2438369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4381fe86771d1a156881ecb6dd94f520fc936bc42d05e1e8c1faa3eb6fa744b5. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2438370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d254bba5fc2cf6598b952f24476d4e4858dcff8bc5c8a2940209f0861e8e815. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:44:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2438371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7028f3e8663d6109144a48bbf162704ca0640554b23de4505c7bd37b92d582. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2438372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05509475ffee67a410d4e789186dbf13ddb87bdd426489360567f4955bd8035a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2438373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c5002026b2bc2093d1f5aa091f8462821cec3cc6b1f15336e2b4a28bfdf94d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2438374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a0f6b943072f1f1a570501e7fa54b2e3a90403349a8e3366ff7244f318f207. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2438377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684be45b39df3beaf512c996540ae71306da8188104f39f02ccd3fecf98160a5. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:40:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2438378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b6f4cadf734e27440341150020ecf45d05b44d9652bd9e56064d425239258e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2438379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e50f4b3f52c2b2bcc7964111103ed3c7a467d1b33d1d5676c433e88ee44ebe0. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2438380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7344bf57164337be052a303e81a73cd7c180ae89f6bd7411799a64b1a24afc. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2438383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f09828a4005570102c7294d59bbc3716ae40220f3cfc77cf35b68564215bd40. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2438391.